There's a reason people come before process and technology. Your tools can't do this alone without smart and adaptable humans to secure the factory.
This is an introduction to the topics of ICS Security, suitable for those new to ICS or transitioning from IT Security.
Cyber Asset Management is one of the first challenges that will come up in ICS Security
DefendICS Training is focused on helping you get started with limited resources.
DefendICS training options include free and commercial solutions and even custom-developed options on request.